CN102187725B - Carrier aggregation - Google Patents

Carrier aggregation Download PDF

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Publication number
CN102187725B
CN102187725B CN200980141733.4A CN200980141733A CN102187725B CN 102187725 B CN102187725 B CN 102187725B CN 200980141733 A CN200980141733 A CN 200980141733A CN 102187725 B CN102187725 B CN 102187725B
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CN
China
Prior art keywords
component carrier
carrier
wtru
information
lte
Prior art date
Application number
CN200980141733.4A
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Chinese (zh)
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CN102187725A (en
Inventor
E·巴拉
张国栋
P·J·彼得拉什基
辛承爀
P·S·王
M·鲁道夫
J·S·利维
D·M·格利可
S·索马桑德朗
K·J-L·潘
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交互数字专利控股公司
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Priority to US10681008P priority Critical
Priority to US61/106,810 priority
Priority to US11157308P priority
Priority to US61/111,573 priority
Priority to US14242909P priority
Priority to US61/142,429 priority
Priority to US15775809P priority
Priority to US61/157,758 priority
Application filed by 交互数字专利控股公司 filed Critical 交互数字专利控股公司
Priority to PCT/US2009/061321 priority patent/WO2010048178A1/en
Publication of CN102187725A publication Critical patent/CN102187725A/en
Application granted granted Critical
Publication of CN102187725B publication Critical patent/CN102187725B/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0092Indication of how the channel is divided
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0094Indication of how sub-channels of the path are allocated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/02Selection of wireless resources by user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access, e.g. scheduled or random access
    • H04W74/08Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/34TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/0406Wireless resource allocation involving control information exchange between nodes
    • H04W72/042Wireless resource allocation involving control information exchange between nodes in downlink direction of a wireless link, i.e. towards terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems

Abstract

A method and apparatus for handling a control channel for carrier aggregation in wireless communications. The method includes determining which component carrier to listen to, detecting the downlink control channel, processing mapping information related to downlink and uplink transmissions and operating discontinuous reception with respect to carrier aggregation. The method also includes detecting a component carrier, determining the component carrier type and locating the anchor component carrier, if necessary, where the anchor component carrier carries the carrier aggregation information.

Description

Carrier aggregation

Technical field

The application relates to radio communication.

Background technology

The data rate that Long Term Evolution (LTE) is supported reaches down link 100Mbps and up link 50Mbps.The LTE (LTE-A) of evolution, compared with employing the LTE of carrier aggregation (aggregation) and other technologies, downlink data rate improves five times.Carrier aggregation can support that the flexible bandwidth of such as nearly 100MHz distributes.In LTE-A, carrier wave is called as component (component) carrier wave.

LTE-A can use in the symmetry relevant with component carrier quantity with component carrier size and non-symmetrical configuration.This realizes by using or being polymerized the component carrier reaching five 20MHz.Such as, single continuous down link (DL) 40MHz multiple component carriers LTE-A be polymerized can with single 15MHz up link (UL) carrier pairings.Therefore, discontinuous LTE-A DL be polymerized allocation of carriers also can not to be polymerized allocation of carriers consistent with UL.

Polymerization carrier bandwidths can be continuous print, and in this case, multiple adjacent component carrier wave can take continuous print 10MHz, 40MHz or 60MHz.Polymerization carrier bandwidths also can be discontinuous, and in this case, a polymerization carrier wave can be formed by multiple but not necessarily adjacent component carrier aggregation.Such as, the DL component carrier of 15MHz can with second of 10MHz non-conterminous DL component carrier phase-polymerization, produce the aggregate bandwidth of 25MHz altogether thus for LTE-A.In addition, the pairing distance that can also change is to arrange component carrier.Such as, the component carrier of 15MHz and 10MHz can be separated by 30MHz, and in another kind is arranged, and they are only separated by 20MHz.Equally, the quantity of component carrier, size and continuity can be different in UL and DL.

In order to access LTE-A to carry out DL and UL transmission, wireless transmitter/receiver unit (WTRU) needs to know that DL and UL carrier wave matches at the component carrier of bandwidth, DL and UL, configuration in random access parameter and other lte-a system customizing messages.Also need to transmit carrier aggregation information, such as carrier identification from base station to WTRU.Physical downlink control channel (PDCCH) can be passed through carry and perform relevant control information with carrier aggregation.This just needs the requirement defining PDCCH, and WTRU needs time and the frequency location of knowing PDCCH, to obtain control information.

Summary of the invention

A kind of for the method and apparatus supporting the control channel signaling in the radio communication of carrier aggregation He catch.Described method comprises to be determined monitor which component carrier, detection downlink control channel, the process map information relevant with down link and ul transmissions and use discontinuous reception to carrier aggregation.Described method also comprises detected components carrier wave, determines component carrier type and locate the anchor component carrier of carrying carrier aggregation information in the case of necessary.

Accompanying drawing explanation

Can obtain more detailed understanding from following specification, this specification is described by reference to the accompanying drawings by way of example, wherein:

Fig. 1 is a kind of execution mode of the wireless communication system/access network of Long Term Evolution (LTE);

Fig. 2 is the wireless transmitter/receiver unit of LTE wireless communication system and the schematic block diagram of base station; And

Fig. 3 is the example of different component carrier.

Embodiment

When mentioning hereinafter, term " wireless transmitter/receiver unit (WTRU) " includes but not limited to the subscriber equipment that can work in wireless environments of subscriber equipment (UE), mobile radio station, fixing or moving user unit, beep-pager, cell phone, personal digital assistant (PDA), computer or any other type.When mentioning hereinafter, term " base station " includes but not limited to the interface equipment that can work in wireless environments of Node B, station control, access point (AP) or any other type.

Fig. 1 shows and comprises evolution and work with Long Term Evolution (LTE) wireless communication system/access network 100 of Terrestrial Radio Access Network network (E-UTRAN) 105.This E-UTRAN 105 comprises WTRU 110 and multiple evolved node B (eNB) 120.WTRU 110 communicates with eNB 120.ENB 120 uses X2 interface to be interconnected.Each eNB 120 is connected with Mobility Management Entity (MME)/gateway (S-GW) 130 by S1 interface.Although illustrate only a WTRU 110 and three eNB 120 in FIG, should be appreciated that in wireless communication system access network 200, the combination in any of wireless device and wireline equipment can be comprised.

Fig. 2 is the property the shown block diagram of LTE wireless communication system 200, and this system 200 comprises WTRU 110, eNB 120 and MME/S-GW 130.As shown in Figure 2, WTRU 110, eNB 120 and MME/S-GW 130 are configured to perform the control channel signaling that realizes carrier aggregation and catch.

Except the assembly that can find in typical WTRU, WTRU 110 also comprises processor 216, at least one transceiver 214, optional battery 220 and antenna 218, and described processor 216 has the memory 222 of optional link.Processor 216 is configured to perform the control channel signaling that realizes carrier aggregation and catches.Transceiver 214 communicates with antenna 218 with processor 216, to realize transmission and the reception of radio communication.When employing battery 220 in WTRU 110, battery 220 pairs of transceivers 214 and processor 216 are powered.

Except the assembly that can find in typical eNB, eNB 120 also comprises processor 217, transceiver 219 and antenna 221, and described processor 217 has the memory 215 of optional link.This processor 217 is configured to perform the control channel signaling that realizes carrier aggregation and catches.Transceiver 219 communicates with antenna 221 with processor 217, to realize transmission and the reception of radio communication.ENB 120 is connected with Mobility Management Entity/gateway (MME/S-GW) 130, and this MME/S-GW 130 comprises processor 233, and processor 233 has the memory 234 of optional link.

LTE-senior (LTE-A) employs carrier aggregation, and in LTE-A, LTE-A community is made up of multiple LTE carrier wave, and each carrier wave can reach 20MHz, and can be continuous.The transmission of down link and up link may need carrier aggregation information from base-station transmission to wireless transmitter/receiver unit (WTRU).

Disclosed herein is be used to indicate the illustrative methods that can use or apply carrier aggregation.It should be noted that LTE-A may need oppositely (backward) and LTE version 8 and 9 compatible, and therefore one, multiple or all component carriers can support comparatively early the operation based on LTE.Compatible component carrier can carry synchronizing channel (SCH), broadcast channel (BCH) and other LTE channels.It is also noted that carry out in carrier aggregation environment the LTE WTRU that operates may and do not know oneself to be arranged in LTE-A carrier aggregation subdistrict.This needs to use network mechanism to prevent too much switching (HO) and cell load equilibrium.

A kind of illustrative methods for transmitting carrier aggregation applicability employs broadcast channel.To the compatibility of LTE refer to one, multiple or all component carriers can carry LTE-A BCH with to compatible LTE-A WTRU notify carrier aggregation.This LTE-A BCH is the expansion of LTE BCH, and it can not occur to disturb with LTE operation and can be compatible with LTE operation.This LTE-A BCH carries the control information specific to community relevant to LTE-A described herein.The described control information specific to community relevant to LTE-A can be carried in the main BCH of LTE-A (P-BCH) as new Master Information Block (MIB), this LTE-A P-BCH can in the carrier wave of compatible LTE, or in independent LTE-A component carrier.Should the control information specific to community relevant to LTE-A can also be carried in the dynamic BCH of LTE-A (D-BCH) as new system information block (SIB), this LTE-A D-BCH can in the carrier wave of compatible LTE, or in independent LTE-A component carrier.

As hereafter in conjunction with disclosed in illustrative embodiments, can also be the anchor carrier of carrying the specific control information of LTE-A with the component carrier of the WTRU compatibility of LTE version 8.The new MIB of LTE-A WTRU and new SIB can be used for for the definition of this anchor component carrier.Can also exist other not with the component carrier of the WTRU compatibility of version 8.The current structure of LTE WTRU can be retained in this anchor component carrier.Such as, the synchronizing channel of carrying MIB with SIB and broadcast channel can identical with version 8.The new MIB for LTE-A WTRU transmitted in this anchor component carrier and/or new SIB can be only readable to LTE-A WTRU.New MIB and new SIB can with MIB and the SIB time of LTE version 8 and/or channeling.Further, LTE-A WTRU can also use new radio network temporary identifier (RNTI) to come for new MIB and new SIB.MIB and SIB readable to LTE-A WTRU can be present in all anchor component carrier.New MIB and new SIB can classify based on LTE-A WTRU.

As hereafter in conjunction with disclosed in illustrative embodiments, can also be the anchor carrier with extra SIB with the component carrier of the WTRU compatibility of LTE version 8, described extra SIB defines for LTE-A WTRU in this anchor component carrier.Can also exist other not with the component carrier of the WTRU compatibility of version 8.Can for LTE-A WTRU defines new MIB and/or the new SIB of volume in other component carriers.

In another illustrative methods, not message based method can be used to carry out indication carrier wave polymerization.About the information of downlink component carrier can be implicitly carried in synchronizing channel.Such as, to by base station, as e Node B the synchronizing sequence about component carrier that uses select/configure, thus when these synchronizing sequences being detected by WTRU, then know these component carriers of polymerization.

In another illustrative methods, existing idle code-point can be used in existing MIB to indicate the polymerization of the MHz such as 40,60,80.

In another illustrative methods, extended bit idle in existing MIB may be used for some other positions, and these positions can have in more detail about the information of all possible band width configuration.Such as, SIB1 or its expansion can be used.

In another illustrative methods, LTE-A controls and/or system information can control with radio resource to transmit together with (RRC) signaling.In this example, not for LTE-A WTRU defines new MIB or new SIB.After WTRU is connected with system, can come to transmit information needed with signal by higher level signaling.In order to reduce to postpone, this information can also be transmitted during Random Access Channel (RACH) process, such as, use message 4.

In another illustrative methods, component carrier is not compatible with the WTRU of version 8, and can not be found by the WTRU of version 8.New synchronizing channel, new MIB and new SIB can be defined in these component carriers.These new channels and information readable to LTE-A WTRU.The subcarrier that can not be found by any WTRU can also be defined.These carrier waves can find via the signaling on other carrier waves, and when needs for increasing transmission bandwidth.Identical community ID or the function of some other implicit expression may be used for by the component carrier be polymerized.Such as, when WTRU detects identical community ID on multiple component carrier, then represent that these carrier waves are polymerized.List of presorting can be there is for by the component carrier that is polymerized.This list can be transmitted to WTRU via disclosed signaling herein.

Hereinafter in conjunction with in another illustrative methods of illustrative embodiments and up link, detect all or part component carrier by WTRU.By WTRU, random access procedures are started to the whole component carriers be polymerized desired by it.Such as, if there are 5 component carriers, and WTRU only wishes use first and second, then this Stochastic accessing for be these two component carriers.For uplink carrier polymerization, RRC signaling or random accessing message can be used, such as message 4.

In another illustrative methods, each component carrier is read also respectively subsequently by BCH information being compared and mating and be merged together.Such as, can usage flag this component carrier be indicated to be a part of being polymerized in BCH.In this case, the highest significant position (MSB) of the redundancy mib information that the MIB on each independent component carrier transmits, such as sequence frame number (SFN) may need to merge.

In another illustrative methods, component carrier can be the WTRU compatibility with LTE version 8, and can be a part for polymerization.But this component carrier does not carry LTE-A P-BCH.This component carrier can be the part from/main frame, and in this mechanism, described component carrier can broadcast skew, such as, with the pairing distance of principal component carrier wave.This skew can indicate the component carrier (such as, main carrier) providing LTE-ABCH with marking.

Discussed herein and in conjunction with example disclosed in illustrative embodiments, if the component carrier of lte-a system information is not carried in LTE-A WTRU preemption, then this WTRU can be redirected to the component carrier carrying lte-a system information for each.

Equally, LTE-A WTRU can receive about the information of monitoring which or which component carrier for the down link control information from LTE-A BCH or L1 or L2/3 signaling.

Disclosed is below illustrative methods for detecting down link control information.Can detect himself downlink control channel by using blind Detecting in all candidates after WTRU, wherein said candidate is one or more with all possible control channel at the specific WTRU control channel place that is target.As described herein, down control channel can be the physical downlink control channel (PDCCH) that can be used for sending LTE-A control information.When employing multiple PDCCH for component carrier, such as, when each component carrier has a PDCCH, the quantity of blind Detecting significantly can increase along with the quantity of PDCCH.The quantity of blind Detecting can be reduced specific to the search volume of WTRU by restriction.By higher level signaling, this search volume is sent to WTRU with signal.In order to reduce quantity and the higher level signaling consumption of blind Detecting, identical search volume can be used to all component carriers, such as, the search volume that first carrier uses.

Disclosed is below the example of the denotable content of control information.In an example, LTE-A control information can indicate the position of the down link data mandate for LTE-A WTRU.In an illustrative embodiments, the position of down link data mandate can in the component carrier identical with the component carrier receiving control information.In another illustrative embodiments, the position of down link data mandate can in the component carrier different from the component carrier receiving control information.In another illustrative embodiments, if employ multiple component carrier to carry the position of down link data mandate, then the position of down link data mandate can be contained in or not be comprised in the component carrier identical with the component carrier receiving control information.

Down link data mandate can indicate pre-authorization.Such as, in the Transmission Time Interval (TTI) before actual grant, WTRU can receive pre-authorization, and this pre-authorization is for notifying that WTRU will send actual grant in the next tti.Described pre-authorization can also designation data can send on which or which component carrier.Like this, LTE-A WTRU can reduce the internal memory of the down link data for cushioning other WTRU.

WTRU can be configured to process the down link data mandate that one or more symbol arrives before data arrive.LTE-A subframe can comprise position than control character more forward in LTE, to allow to operate compared with the WTRU of low-complexity.

Example disclosed be below about physical downlink control channel (PDCCH) and this channel be how at least based on the size of total aggregate bandwidth, the quantity of component carrier and disclosed herein other because usually mapping to component carrier.

In one embodiment, WTRU is configured to process following situation: component carrier vary in size and its summation is less than or equal to the maximum LTE bandwidth of 20MHz (such as, two carrier waves are 10MHz and 5MHz, or two carrier waves each be 10MHz).A PDCCH can be used for multiple component carrier.Such as, a PDCCH for (10+10) MHz can use the control channel form identical with in LTE.

In another embodiment, control channel, a such as PDCCH, may be used for multiple downlink component carrier that a group comprises nearly all available components carrier waves.In described multiple downlink component carrier one can transmit this PDCCH.WTRU is configured to detect this PDCCH, and does not need the every other component carrier searched in described group.If necessary, this PDCCH can be converted to another component carrier, by L1 or L2/L3 signaling or based on the implicit expression mapping of deriving from sequence frame number (SFN), TTI index, WTRU ID etc., the position of this PDCCH can be sent to WTRU.

In some cases, identical frequency resource can be used in all or part component carrier.Such as, for the WTRU with peak-rate requirements, the whole or most resources likely on all component carriers all will be used for down link or ul transmissions simultaneously, or report broadband CQI by WTRU.On multiple component carrier (with in component carrier) can also be passed through encode to transmitting and distribute, these same asset of different component carrier repeat identical data, in different component carrier, use different redundancy versions or when these component carrier generation frequency hoppings, the same asset on multiple component carrier is used for frequency diversity.

When using the method for an one-component carrier wave PDCCH, do not need to send independent PDCCH for all component carriers.If employ identical HARQ process for component carrier, then can carry out pointer some subsets to all component carriers or component carrier by L1 or L2/L3 signaling and employ a PDCCH.If employ independent HARQ process for component carrier, then can use less PDCCH form for other component carriers.These forms do not need to carry public information, such as Resourse Distribute, MIMO information etc.

When using a PDCCH for multiple component carrier (comprising all), can be indicated by L1 or L2/L3 signaling.This PDCCH form comprises the public information being applied to all component carriers, such as Resourse Distribute, MIMO etc.

When component carrier varies in size, the component carrier of all operations can have identical distribution.Therefore, WTRU and base station need a kind of rule to determine how in other component carriers, to embody distribution.Such as, if the PDCCH instruction in component carrier A employs Resource Block (RB) 50-100, but copying in attached component carrier, i.e. the component carrier B of described distribution, only have 75 RB, this just needs the distribution determining component carrier B.In this case, described rule can determine that component carrier B should use RB 50-75 still to use RB 25-75.

PDCCH and for transmit shared data channel, such as physical down link sharing channel (PDSCH) component carrier between mapping can pass through higher level signaling, i.e. L1 signaling (PDCCH also carries carrier index afterwards) and realize and/or implicitly realized by the component carrier transmitting PDCCH.When being for which carrier wave when using the L1 signaling assignment information come in the mandate of indicating downlink link, the PDCCH district carrying one or more indexes of carrier wave can be referred to as multi-carrier indicator field.After decoding to PDCCH, the carrier wave indicated by use is carried out receiving downlink transmission by WTRU.

In LTE downlink subframe, first OFDM (OFDM) symbol can comprise physical control format indicator channel (PCFICH), and first group of one to K OFDM (OFDM) symbol may be used for communications of control data (such as, K can reach front four OFDM symbol, but be not limited to this quantity), remaining OFDM symbol then may be used for transfer of data.Quantity for the OFDM symbol of communications of control data notifies with signal in PCFICH.Zero to K the OFDM symbol being used for carrying control data can notify with signal by PCFICH.Contain in component carrier in the execution mode of PDCCH, PDCCH can be carried in the component carrier identical or different with the component carrier dispatched for PDSCH.When transmitting PDCCH in another component carrier, WTRU still needs to know have how many OFDM symbol for control data in (having PDSCH's) target component carrier wave.Therefore, following restrictive condition is used.Usually in all component carriers, all transmit PCFICH, and do not consider the position of PDCCH.Therefore, independently controlled area size may be had in each component carrier.

When WTRU detects PCFICH in component carrier, the OFDM symbol quantity for control data transmission in target component carrier wave indicated by PCFICH is decoded.This comprises the possibility of zero OFDM symbol for control data transmission.

In another embodiment, can in one-component carrier wave, in first (primary) component carrier, such as transmit the PCFICH being used for all or part component carrier.Like this, WTRU can know the quantity of the PDCCH symbol in each component carrier, and can determine the quantity of the data symbol in each component carrier.

In one or more component carrier, transmit PCFICH by e Node B, in one or more component carrier, have how many PDCCH symbol to indicate.E Node B will indicate zero-length PDCCH district by specifying in corresponding PCFICH zero-length PDCCH district (being hereafter called PDCCH-low).The component carrier with zero-length PDCCH district must be associated with the component carrier with the PDCCH provided by e Node B.E Node B will indicate PDCCH-harmonic component carrier wave to increase available resource block, for the PDSCH transfer of data to WTRU.

Disclosed herein is the method configured for sending carrier component with signal.Usually, the quantity of up link and downlink component carrier is restricted respectively.Alternatively, the combination that allowed (to be polymerized the form of quantity and/or uplink/downlink pairing) is restricted, and described configuration sends with signal via BCH (when specific to the asymmetric polymerization of community) or L2/3 signaling (when specific to the asymmetric polymerization of WTRU).

When the quantity of downlink component carrier is different with the quantity of uplink component carrier, (namely, asymmetric uplink/downlink component carrier aggregation for PDCCH signaling), any one method disclosed herein may be used to PDCCH signaling.For the situation of asymmetric uplink/downlink, the size of each component carrier and the quantity of component carrier can be different in down link or up link.Further, the quantity of up link and downlink component carrier also can be different.For given WTRU in this case, the quantity of movable (active) component carrier can be less than the summation of component carrier quantity in up link or down link.In " independently " method disclosed herein, very the single uplink component carrier of Lock-in is associated with each downlink component carrier, and the situation that some uplink component carrier are associated with multiple downlink component carrier.Uplink/downlink pairing specific to WTRU can also be used for load balance (such as, considering 3 downlink carriers and 2 uplink component carrier).Uplink/downlink pairing specific to community can produce bit and match more load (such as due to the uplink/downlink of WTRU in given uplink component carrier, consider the situation of 3 uplink component carrier, one of them uplink component carrier is used by all WTRU).

Disclosed is the illustrative methods for uplink configuration configured about carrier wave below.In LTE-A, e Node B can determine uplink resource allocation according to WTRU feedback, offered load and other information received.Uplink scheduling grant will inform WTRU via down link control information (DCI) with signal on PDCCH.Term DCI and PDCCH can exchange use.As described here, in order to support to be greater than 20MHz, be such as the downlink transmission bandwidth of 100MHz, carrier aggregation is very important in LTE-A.Owing to employing carrier aggregation in UL, and the possibility of UL/DL asymmetric carrier aggregation can cause mapping difficulty, and therefore the mapping (being also carried on PDCCH) of up link (UL) scheduling authorization is also extremely important.This asymmetry can be applied to carrier wave size and number of carriers simultaneously, that is, a 20MHz DL carrier wave can with the UL carrier pairings of two 5MHz.

UL scheduling authorization signaling entrained in PDCCH is significant in carrier aggregation.UL scheduling authorization signaling can depend on for the polymer grade of medium access key-course (MAC) and the polymer grade for physical layer (PHY).In addition, the downward compatibility for LTE version 8 should also be considered.

Disclose a kind of method in one embodiment, the method is used for the uplink grant of each UL carrier wave being mapped to single DL carrier wave and not considering UL/DL asymmetry.The mapping of uplink grant can be cured as and situation is polymerized for all possible UL/DL.This mapping can be fixing or semi-static.This mapping by the signaling specific to WTRU or can have been come by the higher level signaling specific to community.When there is multiple DL component carrier, this UL authorizes frequency hopping on the different DL carrier waves in different TTI.This frequency-hopping mode can inform WTRU by the signaling specific to community or the higher level signaling specific to WTRU with signal.Alternatively, also can determine this frequency hopping by pre-defined rule, such as, use the cyclic shift of modulo operation.

If use specific signaling or higher level signaling to authorize mapping to be indicated to WTRU UL, and WTRU uses semi-static process to read this signaling, then WTRU decodes to UL mandate wherein when receiving and specifying component carrier.

If determined by pre-defined rule, then WTRU uses modulo operation to determine the frequency-hopping mode that UL authorizes.Once determine, WTRU just authorizes UL and decodes in appointment component carrier.

Can be coded independently for each UL component carrier or for the UL mandate of each UL mixed automatic repeat request (HARQ) entity and be mapped to corresponding DL component carrier.Employ in the uplink in the situation of spatial reuse, the multiplexing code word of the enterprising row space of at one time multiple-frequency resource can be controlled by a HARQ entity.Alternatively, the UL mandate for multiple UL component carrier (or UL HARQ entity) also can be encoded together and is mapped to single DL component carrier.Alternatively, described mandate by the UL encoded together can be distributed on multiple DL component carrier.

Disclose a kind of method in another embodiment, the method is used for, in asymmetrical situation, the uplink grant being used for all UL component carriers is mapped to a DL component carrier.This UL authorizes the control information needing to carry for one group of UL component carrier.For the fixing mapping between uplink scheduling grant and corresponding uplink component carrier, this is mapping through the signaling specific to WTRU or the higher level signaling specific to community notifies with signal.When using the signaling specific to WTRU, then need specific to the mapping between the parameter and UL component carrier index of WTRU.Also may need to use to UL component carrier the mapping that have employed WTRU ID or similar information.When there being a uplink component carrier for each uplink grant of WTRU, then uplink grant does not need the index comprising uplink component carrier.When a uplink grant is on multiple component carrier during Resources allocation, the resource allocation field in uplink grant then can comprise uplink component carrier index or cross over the expansion RB index of multiple component carrier.When using the dynamic mapping between uplink scheduling grant and corresponding uplink component carrier, can with signal informing uplink component carrier index information in uplink scheduling grant.Also the UL component carrier be associated may be authorized to use bitmap mapping to UL.Other mapping methods can also be used.

Multiple UL scheduling authorization component combination is that a polymerization UL authorizes, and each component mandate corresponds to an independent UL component carrier.But, shared public information (comprising UE ID) between component (only with signal notice once) can be authorized, with saving signaling expense by the UL in polymerization UL authorizes.

A uplink grant is used for all or part component carrier.When group's discrete Fourier transform expansion OFDM (DFT-S-OFDMA), N number of single-carrier frequency division multiple access (SC-FDMA) or mixing group DFT-S-OFDMA and N number of SC-FDMA are used as multiple access scheme, uplink grant can on multiple component carrier Resources allocation.Such as, the component carrier using single inverse discrete Fourier transform fast Fourier transform (DFT-IFFT) to combine in SC-FDMA can have a mandate.

For down link control information (DCI) form to UL resource authorization, the polymerization UL bandwidth (BW) in component carrier being considered as a component carrier with the rear size of combination expands (such as, if be combined into by the component carrier of two 5MHz, there is a UL mandate, then this DCI format corresponds to the component carrier of a 10MHz, if wherein the size of DCI format is identical with only having the UL component carrier of single 10MHz).Can from BCH, WTRU or from specific to the signaling of community to infer putting in order of component carrier and Resource Block (RB) in this polymerization in the carrier frequency of signal notice.Polymerization BW is greater than to the situation of 20MHz, the expansion of DCI format corresponds to this polymerization BW.Such as, if this polymerization is 20+10MHz, then DCI format will correspond to single 30MHz bandwidth.

For comprising one group of public field and one group (or specific to component carrier group) field specific to component carrier to the DCI format of UL resource authorization.Common Control Channel specific to group may need the second cyclic redundancy check (CRC) (CRC).Below all or part of parameter can for all component carriers share: modulation and code set (MCS), precoding, number of plies amount, number of codewords, frequency hopping, distributed virtual resource block (DVRB).The RB of each component carrier distributes can be different.Alternatively, all parameters are all shared (such as, Resourse Distribute are videoed or mirror image in all or part component carrier).

The downlink component carrier that all uplink component carrier map to can be configured by higher level signaling.

Disclose a kind of method in another embodiment, the method is used for uplink grant being mapped to (may be different) predetermined component carrier.Mapping between this UL and DL component carrier to be determined by the signaling specific to WTRU or the standard (not needing extra signaling) that notified with signal by the higher level signaling specific to community and is fixed.

If multiple uplink component carrier is mapped to a downlink component carrier, then UL authorizes needs the control information of carrying UL component carrier index.Disclosed hereinly do not consider that the method for UL/DL asymmetry is also applicable to present embodiment for the uplink grant of each UL component carrier is mapped to a DL component carrier.

Have in the situation of physical down link channel (PDCCH) in all or part downlink component carrier, WTRU needs to check that these carrier waves are to learn the PDCCH whether existing and have different frequency.First downlink component carrier is the carrier wave that WTRU can preempt at first.WTRU only can read this first downlink component carrier, and reads other component carrier when using multi-carrier indicator or higher level signaling to indicate.Such as, when transmitting data in the uplink component carrier of e Node B requests WTRU in the downlink component carrier mapping to non-described first component carrier, uplink grant will be carried in this downlink component carrier.Disclose two execution modes in order to this situation to be described.In one embodiment, have a default uplink component carrier and a downlink component carrier be associated, WTRU can monitor this downlink component carrier always, and this carrier wave may be the first component carrier also may be other carrier waves.In another embodiment, also apply the DRX process for downlink component carrier disclosed herein in this case, namely PDCCH also carries uplink grant, and applies identical DRX process.

Multiple UL for a WTRU authorize to have in the DL component carrier of multiple PDCCH single (or multiple) and transmit simultaneously.This WTRU has multiple WTRU ID, authorizes to map to which UL component carrier to distinguish which UL.This mapping between WTRU ID and component carrier is determined by network and is notified with signal by higher level.Some WTRU ID may correspond in multiple UL component carrier, and authorization method disclosed herein can be used for explaining mandate.

Illustrative methods disclosed below operates for the discontinuous reception (DRX) of carrier aggregation in LTE-A.

In one embodiment, WTRU be configured to one or more but and not all component carrier in work (that is, WTRU has up link or downlink transmission).Other component carriers are idle, and WTRU does not attempt detecting any control information on DL component carrier.Independent PDCCH can be sent for each component carrier.If WTRU is scheduled on other component carriers, then this WTRU is notified on its present component carrier wave worked by L1 or L2/L3 signaling.After reception signaling, WTRU attempts detecting PDCCH on other component carriers.Can make a reservation in reception signaling (when being scheduled on other carrier waves as WTRU) and the time of transmitting on other carrier waves between PDCCH.By this mechanism, only on an activity components carrier wave, such as use DRX on the first component carrier.

There is PDCCH and each carrier wave of each PDCCH has in the standalone case of PDSCH at each component carrier, DRX can be used to each component carrier, thus by reducing compared with ON (unlatching) duration of the maximum component carrier of use and the ON duration of the component carrier infrequently used, carry out to reduce more neatly the power consumption of WTRU.Current DRX process did not allow for zero ON duration, this is because do meaningless in single-carrier system like this.For multiple component carrier system, ON duration vanishing can be allowed, utilize DRX power to reduce more fully by one-component carrier wave.Therefore, the parameter area of DRX can comprise zero ON duration or unlimited DRX dormancy time.The DRX process of another component carrier can be set via the communication on one-component carrier wave, so just can notify that WTRU is the component carrier of zero ON duration before starting again to monitor.Such as, radio resource can be carried control (RRC) signaling to start the DRX process on component carrier B in component carrier A.

The PDCCH received in one-component carrier wave may affect the DRX state (behavior) on other component carriers.During the ON duration of the DRX circulation in carrier wave A, WTRU can obtain PDCCH, and base station has prepared to start high speed data transfer to multiple component carrier simultaneously, but the DRX circulation on other component carriers is long or was zero ON duration.Component carrier A receives PDCCH can make WTRU change the state of DRX on other component carriers.Such as, WTRU N number of subframe under monitoring in some other (or all) peculiar component carrier.In another example, WTRU turns back to the different DRX circulations with the higher ON duration, and can predetermined hold-time.WTRU can also monitor component carrier predetermined way for PDCCH reaches the scheduled time.

Alternatively, can whole polymerization or its sub-centralized definition 2-D DRX mode (pattern).Different from every carrier wave DRX process, define a multicarrier DRX mode by the position of duration and ON duration in all component carriers can monitored at WTRU.

In order to ensure the downward compatibility with LTE version 8, all component carriers are all configured to support the WTRU with version 8 compatibility.Each component carrier can click here disclosed being configured.In one embodiment, in each carrier wave, version 8PDCCH and LTE-A PDCCH carries out multiplexing in the mode of code division multiplexing (CDM).Like this, expansion (or covering) code can be derived based on WTRU ID, namely radio network temporary identifier (RNTI).

Illustrative methods disclosed herein is for realizing the compatibility between LTE version and LTE-A.In one embodiment, in each carrier wave, version 8PDCCH and LTE-A PDCCH is multiplexing in the mode of frequency division multiplexing (FDM).Alternatively, LTE-A network can be some Resourse Distribute parts of LTE-A WTRU reserved bandwidth.

In another embodiment, in each carrier wave, version 8PDCCH and LTE-A PDCCH is multiplexing in the mode of time division multiplexing (TDM), different OFDM symbol can transmit LTE-A PDCCH thus.

In another embodiment, in each carrier wave, version 8PDCCH and LTE-A PDCCH is multiplexing in the mode of TDM, and transmit LTE-A PDCCH with TTI thus, such as, some subframes are LTE, and some are LTE-A.DRX can be used to manage the separation between this two type, can not attempt to make LTE WTRU decoding to LTE-A PDCCH.

In another embodiment, in each carrier wave, version 8PDCCH and LTE-A PDCCH is carried out multiplexing in the mode mixing FDM/TDM, transmit LTE-A PDCCH with different resource elements (RE) thus.

Following discloses be about signaling and the illustrative embodiments of catching.What Fig. 3 represented is the dissimilar component carrier that can apply in the exemplary embodiment, and is openly only exemplary purpose herein.

Usually, in the first illustrative embodiments, only have a LTE-A component carrier to carry system information specific to LTE, and this component carrier is called as first or anchor component carrier.Term first or anchor component carrier can exchange and make for representing identical content.By configuration, specified anchor carrier can provide for the system information of specific cell, synchronous and paging.Non-anchor carrier can not have the broadcast channel specific to LTE-A, but can have synchronizing channel.Remaining LTE-A component carrier (non-anchor carrier) can not carry lte-a system information.Except following two kinds of situations, an active non-anchor component carrier can not have synchronizing channel, and such WTRU just can't detect this active non-anchor component carrier.In the first exception, if an active non-anchor LTE-A component carrier supports version 8WTRU, then this active non-anchor LTE-A component carrier has version 8 synchronizing channel and version 8 broadcast channel.This represents with type 2 in figure 3.In the second exception, if an active non-anchor version 8 component carrier does not support LTE-A function, but have some system informations specific to LTE-A, then this active non-anchor version 8 component carrier has version 8 synchronizing channel and version 8 broadcast channel.This represents with type 6 in figure 3.

Second example embodiment can have multiple anchor carrier in a lte-a system.Except anchor component carrier, version 8 carrier wave can also be had.This version 8 carrier wave can be " version 8 component carrier without LTE-A function ", as shown in the type 5 and 6 in Fig. 3, or supports the backwards-compatible LTE-A component carrier of version 8 function, as shown in the Class1 in Fig. 3 and 2.Type 5 and type 6 component carrier do not support LTE-A function, multiple-input and multiple-output (MIMO) technology of such as evolution more, collaboration communication, control channel etc. specific to LTE-A.Type 6 component carrier can transmit some additional informations on such as broadcast channel, and described information is transparent for version 8WTRU.Should be appreciated that the LTE-A component carrier of backwards-compatible version 8 supports version 8 and LTE-A function simultaneously.

Further, the LTE-A component carrier of non-return compatible version 8 may also be there is, as shown in the type 3 and 4 of Fig. 3, and some subcarriers.Type 3 and 4 component carrier can not be backwards-compatible, and can not be used by version 8WTRU.Subcarrier can not can not be found by LTE-A WTRU by version 8WTRU, and can be configured for additional bandwidth by base station.In Fig. 3, the LTE-A component carrier of an active non-anchor shown in type 4, non-return compatible version 8 can not be detected by WTRU.

Version 8 carrier wave and LTE-A carrier wave all use identical synchronizing channel and technology.This just means, WTRU can not by the carrier wave using synchronizing channel to distinguish this two type.Anchor component carrier can be backwards-compatible version 8 also can right and wrong backwards-compatible.

Usually, in these carrier waves to be detected at synchronous phase as WTRU after, need to obtain the system information specific to LTE-A.This information only transmits on the broadcast channel of anchor carrier.Therefore, WTRU need detect anchor carrier and on this carrier wave read system information.Following discloses be anchor carrier for solving this mechanism and process, by this anchor carrier, WTRU can be locked in anchor carrier; Determine whether carrier wave is anchor carrier; Receive the system information specific to LTE-A that transmits and determine the type of the information entrained by anchor carrier.

To openly there is the LTE-A signaling of single anchor component carrier and catch now.This illustrative embodiments only has an anchor carrier in lte-a system, and only has this anchor carrier can carry system information specific to LTE-A.

This illustrative embodiments has two stages.First stage relates to WTRU and is locked in anchor carrier.Second stage relates to the transmission of the system information specific to LTE-A.These two aspects will be described in detail below.

At first stage or synchronous phase, because WTRU scans until successfully find synchronizing channel frequency band, so LTE-A WTRU can be locked in any one carrier wave.LTE-A WTRU may be locked in following one or more carrier wave: have the component carrier of version 8 compatibility, such as Class1,2,5 or 6; And grappling LTE-A component carrier, the such as Class1 of backwards-compatible version 8 and the type 3 of non-return compatible version 8.

Can there be two parts the described first stage.Part I just determines carrier type after finding component carrier once WTRU.WTRU determines that carrier wave is anchor carrier.Part II relates to WTRU and whether knows that this component carrier is not anchor carrier.Part II provides for finding the method for anchor carrier and the mechanism for WTRU being guided into anchor carrier.

For the type knowing component carrier, provide several illustrative methods.In the first illustrative methods, in BCH, transmit the information of instruction component carrier type.WTRU reads BCH MIB, SIB or MIB and SIB.WTRU decodes to BCH, obtaining information know the type of component carrier.In the component carrier being configured to the pattern supporting version 8WTRU, anchor carrier information can be included in MIB or SIB of expansion, would not be read like this by version 8WTRU.

Especially, the instruction to carrier type can be carried in BCH by the novel entities that definition is similar with MIB or SIB.WTRU knows the position of this entity on time/frequency, and reads this information on described position.This novel entities can with version 8BCH entity in frequency and/or multiplexing on the time.New radio network temporary identifier (RNTI) can also be used to encode to described novel entities.Described information can not produce excessive expense, and only as the instruction to carrier type.Such as, described novel entities can be carried in middle x radio blocks (RB) of 1.25MHz bandwidth, and on OFDM (OFDM) symbol with any other set time on OFDM (OFDM) symbol adjacent with Physical Broadcast Channel (PBCH) or relative to PBCH, Physical Synchronisation Channel P-SCH etc., wherein x is less than 6.This instruction can also to be coded in new version 8SIB type or as the expansion of existing SIB.

WTRU to be carried at regular time/frequency location on novel entities decode.After to novel entities decoding, WTRU can know the type of component carrier.WTRU can by decoding to obtain this information to the expansion of version 8SIB or that newly defines or some existing versions 8SIB.

According to another kind of method, WTRU performs random access procedure in uplink carrier or the uplink carrier that is linked with the downlink component carrier detected, and obtains radio resource and control (RRC) and connect.Afterwards, if WTRU supports carrier aggregation, then can receive information about anchor carrier by higher level signaling.

Especially, can transmit the instruction of carrier type and other relevant informations to WTRU at the rear of RRC connection.LTE-A WTRU is locked in carrier wave and obtains RRC and connects.If this carrier wave or anchor carrier, then can transmit all lte-a system information by RRC signaling to WTRU.If this carrier wave is not anchor carrier, then also can be transmitted the position of anchor carrier to WTRU by RRC signaling.In this case, the position of WTRU by using higher level signaling to know component carrier type and possibility anchor carrier.Alternatively, the RRC signaling from non-anchor carrier will transmit all lte-a system information, and WTRU will know anchor carrier from this information.It should be noted that in this method based on RRC, anchor carrier can be specific to community also can specific to WTRU.

WTRU can also know carrier type during random access procedure.Such as, carrier type can be transmitted in message 2 or 4.WTRU decodes to this particular message and knows carrier type, or directly indicates anchor carrier within the message.It should be noted that in this method based on Random Access Channel (RACH), anchor carrier can be specific to community also can specific to WTRU.

In another method, some bits in idle bit string can be used to indicate the type of component carrier.Version 8WTRU can ignore this Bit String, and therefore these additional informations be inserted in MIB are transparent concerning these WTRU.

Such as, individual bit can be used whether to be anchor carrier to indicate component carrier.The structure of Master Information Block in version 8 is illustrated in table 1 below.MIB is configured by downlink bandwidth, physical mixed automatic repeat request indicating channel (PHICH) and System Frame Number forms.In addition, idle bit string is also reserved with.Meanwhile, in downlink bandwidth district, two idle code-points are also had.

Table 1: Master Information Block

Residue idle bit can be used to transmit some system informations specific to LTE-A.Such as, can use residue idle bit with signal inform the quantity of downlink component carrier, uplink component carrier and they how to link.

Where residue idle bit locates anchor carrier if can also refer to be shown in.If the lazy weight of bit is to indicate the absolute position of anchor carrier, then the RB in the physical down link sharing channel including anchor carrier positional information (PDSCH) can be indicated to distribute (that is, time/frequency resource address) with these bits.

After being successfully completed synchronizing process, WTRU decodes to MIB.If this WTRU is version 8WTRU, then this WTRU ignores the idle bit in MIB.If this WTRU is LTE-A WTRU, then this WTRU by MIB some not the bit (by aforementioned definitions) that uses by version 8WTRU be interpreted as the bit of component carrier type.If this carrier wave is anchor carrier, then WTRU knows the position of the system information specific to LTE-A, and reads this system information specific to LTE-A.If this carrier wave is not anchor carrier, then WTRU obtains the information of the position of instruction anchor carrier.WTRU can obtain this information by carrying out decoding to some or all of residue idle bits.Alternatively, WTRU can receiving package containing anchor carrier positional information PDSCH Resource Block (RB) distribute.

Another kind method uses new cyclic redundancy check (CRC) (CRC) mask code sequence to shelter the CRC of PBCH in LTE-A, and this new mask code sequence of use is decoded to BCH by LTE-A WTRU.If the backwards-compatible version 8 of carrier wave right and wrong and be anchor carrier (that is, type 3), then because new BCH (also can be synchronizing channel) can only be detected by LTE-A WTRU, therefore this instruction is implicit expression.In this case, LTE-A WTRU must know that this BCH (or synchronizing channel) is specific to LTE-A.This can realize by such as using new cyclic redundancy check (CRC) (CRC) mask code sequence to shelter BCH.The CRC mask code sequence that LTE-A uses this new is decoded to BCH.

In another illustrative methods, if the LTE-A carrier wave (type 3) of the backwards-compatible version 8 of anchor carrier right and wrong, specific CRC (such as ANCHOR_CRC) then should be used to shelter LTE-A Physical Broadcast Channel (PBCH), and anchor carrier is indicated to the successful decoding of this PBCH.In this example, WTRU performs synchronizing process and decodes to PBCH, to obtain the information of carrier type.When decoding to PBCH, WTRU uses corresponding CRC to carry out demasking to PBCH.If this WTRU is LTE-A WTRU, then this WTRU will use specific CRC (such as ANCHOR_CRC) and conventional CRC (as in LTE version 8) to carry out demasking to PBCH.If use the CRC of specific CRC to detect successfully, then indicate anchor carrier.If use the CRC of specific CRC to detect unsuccessfully, and use the CRC of conventional CRC to detect successfully, then indicate WTRU do not find anchor carrier and preemption be non-anchor component carrier.In this case, if the component carrier that WTRU preempts is carrier wave (type 2) or type 6 carrier wave of backwards-compatible version 8, then WTRU can read PBCH, can receive SIB, and be directed to anchor carrier via RRC signaling.Further, WTRU can also proceed synchronizing process for next carrier wave and decode to PBCH.Along with WTRU is that carrier wave performs synchronizing process and decodes to PBCH, this process restarts.

If WTRU is version 8WTRU, then it only uses conventional CRC to carry out demasking to PBCH.If PBCH uses specific CRC to shelter, then WTRU can not by detecting the CRC of this carrier wave.Thus, WTRU would not access LTE-A special carrier.

The method of following discloses is used for WTRU to be directed to anchor carrier.After WTRU knows that component carrier is not anchor carrier, WTRU is directed to anchor carrier.By the higher level signaling after the signaling in BCH, RRC connection establishment or the signaling during Stochastic accessing process, WTRU is directed to anchor carrier.

In illustrative methods, can use RRC signaling that WTRU is directed to anchor carrier.After WTRU obtains RRC connection, WTRU can know the position of anchor carrier by higher level signaling.After obtaining the information, WTRU is transferred to anchor carrier and attempts decoding to the BCH in anchor carrier, with receiving system information.

WTRU can also know the position of anchor carrier during random access procedure.Such as, the position of anchor carrier can be transmitted in message 4, and by WTRU this message decoded and know the position of anchor carrier.

The novel entities comprising component carrier type information can be used.This entity can also carry the position of anchor carrier.WTRU can use process same as described above.This novel entities can also be made only to comprise the positional information of anchor carrier.WTRU knows the position of anchor carrier by decoding to this entity, and is then transferred to this anchor carrier.If only have an anchor carrier, then this entity not necessarily transmits in anchor carrier.

According to selected method, can in non-anchor carrier, this be only used to be directed to the mechanism of anchor carrier.Such as, if carrier type and anchor carrier position be respectively by encode and transmit in two different entities, then may need only in non-anchor carrier, to transmit positional information.

WTRU can also proceed Cell searching, till anchor carrier being detected.

This directional commands can be coded in the version 8SIB of newtype or in the expansion of existing SIB.LTE-A WTRU knows this expansion SIB, and knows the position of anchor carrier by decoding to this SIB, or by using idle bit string directional commands to be coded in version 8MIB.

Can transmit position or other possible information about anchor carrier of anchor carrier in subframe, this information is thought blank by LTE-A WTRU.Like this, behind the position knowing anchor component carrier, WTRU will be transferred to this carrier wave.

Illustrative methods disclosed is below used for the transmission specific to the system information of LTE-A.After WTRU finds anchor carrier, need to transmit new system information in this anchor carrier.Illustrative methods for this transmission depends on that whether this carrier wave is backwards-compatible version 8.

When version 8 compatible anchor carrier, version 8BCH remains unchanged.Fresh information can transmit in the expansion of new MIB or SIB or existing MIB or SIB.The following discloses several method for defining new MIB/SIB or its expansion.

For LTE-A, the first broadcast channel also can be expanded on frequency domain in time domain.In the example of frequency domain expansion, N number of subcarrier and current 72 subcarriers can be used.This newly assigned subcarrier can be adjacent with Current central subcarrier, also can off center subcarrier with a fixed qty subcarrier.

Time domain expansion example in, BCH can be transmitted in the frequency identical with version 8 broadcast channel, but, should use than current 4 more OFDM symbol of symbol for MIB and than in SI window for the more subframe of other SIB to transmit this BCH.If use this additional/expansion, then WTRU can know the time/frequency location of novel entities.WTRU reads new system information from this fixed position and decodes, to receive the system information specific to LTE-A to it.

System information specific to LTE-A can be the expansion of information element (IE) in existing version 8SIB or system information (SI).The different ASNI form of version 8 and LTE-A enables LTE-A WTRU RRC receive related content.Such as, carrier wave specific uplink anchoring information IE in conventional version 8 SIB-2 can be received as criticalExtension-Rel10 (Critical growth-Rel10) feature specific to LTE-A by LTE-A WTRU RRC, and therefore to this information of up link access response, this criticalExtension-Rel10 is then transparent to version 8WTRU.Further, the system information specific to LTE-A can be SIB expansion, and this SIB expansion will enter only for independent SI and the SI window of LTE-A.Such as, in community, all operating parameters specific to LTE-A all can be placed in one or more independent SIB, namely SIB-12, SIB-13, wherein have the short period for LTE-A cell configuration is the same with conventional version 8SIB-2 with the SIB that up link accesses, remaining LTE-A SIB then has longer cycle.The LTE-A WTRU of the carrier wave of access version 8 compatibility reads MIB, (it will know LTE-A cell characteristics), then read SIB-1 to dispatch to find whole SIB, and read specific to the SIB of LTE-A, i.e. SIB-12 and SIB-13 based on the schedule information for lte-a system information capture found in SIB-1.

If component carrier carries version 8 and lte-a system both information, then LTE-A WTRU can use the physical downlink control channel (PDCCH) with existing system information wireless electric network temporary identifier (SI-RNTI) of newtype, or alternatively, LTE-A WTRU can use the identical PDCCH with different SIA-RNTI, and this SIA-RNTI is the new RNTI for the LTE-A created by relevant LTE-A WTRU and use.

If use existing SI-RNTI to come for LTE-A carrying system information, then can use new particular downlink control information (DCI) form for SI-RNTI PDCCH.Current DCI format 1C and 1A is the SI-RNTI for version 8.Alternatively, existing DCI format can be used, but use different code rates/control channel element (CCE) polymer grade etc.

The RNTI value that can change in LTE-A maps, to adapt to the use to SIA-RNTI.Provide an example below in table 2.

Table 2:RNTI value

Existing version 8 dispatching method can be used to dispatch together with the system information of LTE-A for version 8 with frequency domain in identical time domain.This just relates to situation disclosed herein, wherein uses system information (SI) length of window identical with version 8 to dispatch SIB-12 and SIB-13.When (stagger) SI making to the LTE-A SIB of whole SI broadcast interpolation to interlock is beyond minimum 160ms periodic regime, then following methods can be used.

In a kind of illustrative methods, frequency resource block (RB) is added to the SI broadcast in compatible carrier wave, thus the length of SI window can reduce to minimum (such as 10), and therefore for all T, the minimum SI cycle can not be exceeded at the version 8 of specific SFN%T=0 and the staggered of LTE-A SI, wherein T is the cycle, namely, NSIB x W <=(SI cycle the shortest in subframe, be generally 160), wherein NSIB is the sum () of SI from SIB-2 upwards, version 8 and LTE-A, and W is the SI window in subframe.

In another approach, can add vertical shift in scheduling rule, such as SFN mould T=(OFFSET-A+FLOOR (x/10)), wherein OFFSET-A is the vertical shift specific to LTE-A.According to this change, the order of the LTE-A SI in version 8 schedule information calculates from the LTE-A SI of first in SIB-1 schedule information the order of first SI of version 8 (instead of from).If additional LTE-A SI is no more than 7, then this OFFSET-A can value be 18 (assuming that getting SI window <=20).

Alternatively, also can use above-mentioned two kinds of methods simultaneously, that is, make SI window less and only can offset by the LTE-A SI on compatible carrier wave.

MIB or SIB expansion can carry possible LTE-A community configured information, the quantity of such as carrier wave and/or anchor carrier, down link and uplink carrier or anchor carrier be how to link and its frequency location (quantity of E-UTRAN absolute RF channel number (EARFCN)).Carrier frequency can be labeled as such as 1,2 ..., N, to realize identifying fast on the PDCCH for up link and down link mandate.LTE-A WTRU can by the up link access of this information on the uplink carrier that links or anchor carrier.

WTRU also can use RRC to receive the information about all carrier waves.

The time/frequency location of the known new MIB/SIB of WTRU or its expansion.This can by distribute to some entities, such as MIB regular time/frequency location realizes.This by notifying that to WTRU the scheduling of these entities realizes, such as, can also transmit this information in SIB 1.WTRU receives these entities by the decoding of given time/frequency location.WTRU can use specific to the RNTI of LTE-A or carry out demasking with the identical RNTI used in version 8 to CRC.After to the decoding of these entities, WTRU just can obtain the system information specific to LTE-A.

Information (quantity of such as transmit antenna, such as many as eight or more) specific to LTE-A can be indicated by existing PBCH, new MIB or new SIB.Further PBCH is revised as the feature (such as, high-order mimo) can supported specific to LTE-A.PBCH is illustrated in following table 3:

Table 3: for the CRC mask of PBCH

PBCH CRC mask when CRC4 is for equaling eight when the transmit antenna port number of e Node B.Know that the quantity of transmit antenna can help to carry out channel estimating and demodulation, for system information (SIB) and data demodulates to PDCCH and physical down link sharing channel (PDSCH) downlink sharied signal channel (DL-SCH).Described below is example about this execution mode.

In an example, if the main carrier anchor carrier (Class1) of backwards-compatible version 8, and only employ new SIB to transmit the system information specific to LTE-A, then first three CRC mask is used for PBCH, as shown in table 3.The information about reaching four transmit antenna quantity can be indicated.The information about reaching eight transmit antenna quantity can be indicated in new SIB.

In another example, if the anchor carrier of backwards-compatible version 8 (Class1), and use new MIB to transmit the system information specific to LTE-A, then whole four the CRC masks shown in table 3 are all used for new PBCH.The information about reaching eight transmit antenna quantity can be indicated.

In another example, if the anchor carrier (type 3) of only LTE-A, then whole four CRC masks are used for PBCH.The information about reaching eight transmit antenna quantity can be indicated.

Method described below is for the treatment of the LTE-A anchor carrier of non-return compatible version 8.In this case, the brand-new broadcast channel with new MIB and SIB can be used.LTE-A is by the system information obtained specific to LTE-A of decoding to these new MIB and SIB.This carrier wave can also comprise multicarrier system information, new synchronizing signal, paging etc.Alternatively, for the anchor carrier of only LTE-A, this LTE-A MIB with SIB can come frequency of utilization and time resource according to the identical mode used in broadcasting with current version 8MIB with SIB.

In version 8 compatibility and version 8 non-compatible anchor carrier, LTE-A WTRU can respond received system information, such as, use time of selecting according to received random access parameter and preamble on specific uplink carrier wave, perform uplink random access.

It is now disclosed that have the second execution mode of single anchor component carrier and multiple LTE-A component carrier detected.

In the first illustrative embodiments, the LTE-A component carrier that uniquely can detect is anchor carrier.But, multiple LTE-A component carrier also may be had to have synchronizing channel but its not carrying system information over the broadcast.This may use for the object of load balancing.In this case, WTRU needs to know carrier type and the orientation mechanism to anchor component carrier.

If detected carrier wave is backwards-compatible version 8, then can use the method for the first illustrative embodiments disclosed herein.

If the LTE-A carrier wave of the backwards-compatible version 8 of detected component carrier right and wrong, then can send the information comprising component carrier type and anchor carrier position on a small quantity.In this case, note because carrier wave is not backwards-compatible, therefore not need to transmit version 8 broadcast channel.

By the novel entities that definition is similar with MIB or SIB, the instruction to carrier type can be carried in broadcast channel.WTRU knows the position of this entity in time/frequency, and reads information on this position.New RNTI can also be used to encode to this information.This information can not produce larger expense and be only the instruction of carrier type, and can carry the position of anchor carrier.Such as, novel entities can be carried in middle x (x is equal to or less than 6) RB of 1.25MHz bandwidth, and carries in the OFDM symbol identical with transmitting Rel-8 MIB.

WTRU to be carried at set time/frequency location on novel entities decode.After to novel entities decoding, WTRU knows the type of component carrier, and may know the position of anchor carrier.

It is now disclosed that there is the 3rd execution mode of multiple anchor component carrier.In the LTE-A community of carrier aggregation, multiple LTE-A component carrier carrying system information can be had.In this case, these component carriers can carry identical system information, or may carry different system informations.RACH parameter for each anchor carrier can be different.These possibilities are disclosed now.

In an illustrative embodiments, all anchor carrier carry identical system information.In this case, the information about whole system can be transmitted in each anchor carrier.Such as, the quantity of down link and uplink component carrier, linking between downlink component carrier with uplink component carrier, random access parameter etc. for downlink component carrier.WTRU obtains the system information specific to LTE-A by the broadcast channel read in any one component carrier.It should be noted that all DL component carriers can be all backwards-compatible versions 8.In this case, the disclosed method for the first illustrative embodiments can be used.

Alternatively, the DL component carrier that WTRU detects in synchronized process can be thought interim anchor carrier by this WTRU.In this case, WTRU obtains random access parameter from this interim anchor carrier, comprises WTRU and will be used for obtaining the interim UL carrier wave of RACH transmission.Interim carrier wave specific ID (RNTI or scrambler sequence) can be applied respectively to the interim carrier wave of DL and UL.According to the method, because the WTRU in community can expand/preempt different anchor carrier, therefore load balancing can be realized in many anchor carrier community.

In the exemplary embodiment, anchor carrier carries different system informations.System information entrained by anchor carrier can part difference.Such as, if there are two anchor carrier, be expressed as grappling X and grappling Y, then entrained on grappling X system information can comprise about the uplink component carrier be linked with this anchor carrier information and likely comprise the information of the downlink component carrier be linked with same uplink component carrier about any other.In another example, only only corresponding with grappling X random access parameter can be transmitted on grappling X and the uplink component carrier be linked.If also have the additional downlink component carrier be linked with same uplink component carrier, then also can transmit the random access parameter being used for these carrier waves on grappling X.It should be noted that the downlink component carrier be linked with same uplink component carrier can have different random access parameter, therefore Node B can be distinguished WTRU and monitor which downlink component carrier.

In this case, WTRU carrys out fetching portion system information by the broadcast channel read in an anchor carrier.All the other system informations can be obtained by higher level signaling after RRC connection establishment.

It should be noted that WTRU be according to hypothesis only have anchor carrier just transmit required for the system information comprising random access parameter start the Stochastic accessing of the uplink component carrier be linked with anchor component carrier attempted.In other method, disclosed in the first execution mode, WTRU can start Stochastic accessing to an active non-anchor component carrier of version 8 to be attempted, and redirects to anchor component carrier by RRC signaling or random accessing message afterwards.

Disclosed method is for WTRU is redirected to anchor component carrier from version 8 carrier wave now.In order to WTRU to be redirected to anchor carrier from the non-anchor carrier of version 8, the method for the disclosed first stage about the first execution mode can be used.It is noted that when there is multiple anchor carrier, can by WTRU from version 8 carrier wave redirect to anchor carrier any one.For this reason, the positional information of all anchor carrier can be transmitted on version 8 carrier wave, and be selected in anchor carrier by WTRU.Can select based on specific criteria, such as preferred carrier frequency, best downlink link quality (such as Reference Signal Received Power (RSRP)), or Stochastic choice.Further, can by the position of transmitting single anchor carrier on version 8 carrier wave by WTRU from version 8 carrier wave redirect to anchor carrier any one.

Method disclosed is below used for WTRU to redirect to another anchor carrier from an anchor component carrier.WTRU can also be directed to another anchor component carrier from an anchor component carrier.This may be used for such as realizing the load balancing in many anchor carrier LTE-A community.Also it is noted that LTE-A grappling can in response to all WTRU idle mode operations.The open illustrative methods about this content now.

According to illustrative methods, network can use redirecting of some types in random access procedure message 4 or as a part for Non-Access Stratum (NAS) message, WTRU can be directed to another anchor carrier from present component carrier wave.In this case, WTRU decodes to message, redirects order and if exist, then WTRU moves to anchor component carrier indicated in this order.In this order, WTRU can receive new anchor carrier centre frequency number, with the frequency shift (FS) of current anchor carrier or some other guides for locating new anchor carrier.

According to another illustrative methods, when WTRU becomes idle condition from connected pattern, can be received by RRC information during Connection Release and clearly redirect order.In this order, WTRU can receive new anchor carrier centre frequency number, with the frequency shift (FS) of current anchor carrier or some other guides for locating new anchor carrier.

According to another illustrative methods, a MIB/SIB can disclose the target carrier frequency of cell load factor and one or more anchor component carrier.If the on-load factor of current anchor carrier is (or quality of connection is under threshold value) on specific threshold, then WTRU can select in the target anchor component carrier indicated by system information automatically, and moves to this carrier wave.This process is used for idle pulley.

Also can carry out in connection mode from an anchor component carrier redirecting to another anchor component carrier.The disclosed method for idle pulley is suitable for too.

Following discloses be can different information types in different anchor carrier.Each anchor carrier can carry the information about linked uplink component carrier.Further, each anchor carrier can carry the information about other downlink component carrier linking to the uplink component carrier identical with this anchor carrier, and each anchor carrier can carry different random access parameters.When there being multiple anchor carrier to link to same uplink component carrier, also identical random access parameter can be used.

Each anchor carrier can have different SIB, particularly comprises the SIB2 about radio resource configuration, such as MIMO configuration, uplink control channel configuration etc.This SIB also comprises random access parameter.It should be noted that in LTE-A, another SIB also can be used to carry this category information.

When LTE-A anchor carrier is used for the paging of WTRU idle pulley, anchor carrier paging cycle each other or DRX cycle length can be configured to difference.Can to be the parameter that different other idle pulley pagings are relevant be " in paging frame for quantity that the subframe of paging occurs ", the current Ns parameter namely in idle pulley paging and paging subframe pattern definition list.

WTRU knows these parameters and system information by reading in the broadcast channel that anchor carrier transmits.Although can have multiple anchor component carrier in LTE-A community, WTRU may only need to lock one of them for system information in preset time.

The method of following discloses is used for carrying out system information modification.When system information (SI) changes, WTRU can obtain notice by two kinds of illustrative methods.In a kind of illustrative methods, WTRU can check that in PDCCH, specific RNTI, this RNTI are used for transfer system amendment order, such as SI-CHG-RNTI.This order can periodically transmit, and can be made up of cue mark.Suppose that SI changes, this order can also be which specific SIB has been modified by using bitmap to indicate.WTRU periodically finds the PDCCH order with given RNTI.After these being ordered to successfully decoding, if there occurs SI change, then WTRU be SIB predetermined time/frequency location reads amended SIB.In another approach, WTRU can detect beep-page message to check the change of certain indicators.

For system information modification, following methods can be used.In illustrative methods, when providing paging, the paging cycle under connection mode can be all identical to all component carriers, or different for different component carrier.

In another approach, when network wishes to change system information, can only paging WTRU in anchor component carrier.Such WTRU just only needs in anchor component carrier, monitor its paging cycle.

In another approach, WTRU can select it to wish the anchor carrier of monitoring according to the paging cycle of its DRX cycle the most applicable.This monitoring can be carried out in the operating time of the ON duration of WTRU DRX and the paging cycle covering selected anchor carrier, thus saves power.

In another approach, WTRU can carry out the computing system amendment cycle according to anchor component carrier.This system amendment cycle can calculate according to SFN mould N, and wherein N can be the amendment periodic coefficient in the frame only received in anchor component carrier.

In another approach, once WTRU have received paging, then this WTRU can start to receive new system information from the amendment cycle.During WTRU receives this new system information, WTRU can stop monitoring other component carriers and only from anchor component carrier monitored data, and receives SI by BCCH simultaneously.

In another approach, WTRU can also monitor the value mark of the SIB-1 in anchor component carrier, and it is just unnecessary in each paging cycle reading gating message like this.

For method disclosed herein, if there is multiple anchor component carrier, then can notify that WTRU needs this WTRU to monitor which anchor component carrier to obtain system information change and/or paging.Alternatively, if be all synchronous for all anchor carrier of network, then WTRU can monitor all anchor component carrier for this information.

Embodiment

1, a kind of method for the treatment of carrier aggregation performed by wireless transmitter/receiver unit (WTRU), the method comprises the carrier aggregation information received for identifying at least one component carrier, and the one-component carrier wave at least one component carrier wherein said carries the downlink control channel associated with described WTRU.

2, the method according to embodiment 1, the method also comprises the described downlink control channel of detection.

3, the method according to aforementioned any embodiment, the method also comprises and positioning the down link control information in described downlink control channel.

4, the method according to aforementioned any embodiment, the method also comprises carrys out receiving downlink transmission based on down link control information.

5, the method according to aforementioned any embodiment, wherein indicates described carrier aggregation information carrying in the broadcast channel of the control information of community.

6, the method according to aforementioned any embodiment, the wherein said control information specific to community is carried as Master Information Block (MIB) or system information block (SIB).

7, the method according to aforementioned any embodiment, wherein indicates the carrier aggregation information about which component carrier in monitoring at least one component carrier described by least one in broadcast channel broadcasts, L2/3 signaling or L1 signaling.

8, the method according to aforementioned any embodiment, wherein said down link control information is used to indicate down link data authorization message and is arranged in the down link control information carrying component carrier.

9, the method according to aforementioned any embodiment, wherein said control information is used to indicate down link data authorization message and is arranged in the component carrier different from the down link control information carrying component carrier.

10, the method according to aforementioned any embodiment, wherein said control information is used to indicate down link data authorization message and is arranged in multiple component carrier, and described multiple component carrier can comprise the down link control information carrying component carrier.

11, the method according to aforementioned any embodiment, wherein said downlink control channel associates with one group of multiple component carrier, all multiple component carrier that wherein said WTRU is configured to detect described downlink control channel and need not searches in described group.

12, the method according to aforementioned any embodiment, the method also comprises by using higher level signaling, L1 signaling or receiving the mapping between described downlink control channel and the component carrier carrying shared data channel implicitly by least one one-component carrier wave transmitted in the component carrier of downlink control channel described.

13, the method according to aforementioned any embodiment, wherein said downlink control channel carries component carrier index.

14, the method according to aforementioned any embodiment, wherein said downlink control channel has the carrier indication field of the index carrying component carrier.

15, the method according to aforementioned any embodiment, the method also comprises and only on activity components carrier wave, uses discontinuous reception (DRX).

16, the method according to aforementioned any embodiment, the method also comprises and uses DRX for each component carrier, with the unlatching duration reduced with use the component carrier do not used compared with the unlatching duration of maximum component carriers.

17, the method according to aforementioned any embodiment, wherein receives described downlink control channel and changes the DRX state on other component carriers to impel described WTRU on the first component carrier.

18, the method according to aforementioned any embodiment, wherein defines 2-D DRX mode on all component carriers or subset.

19, the method according to aforementioned any embodiment, wherein multiple component carrier uses same asset.

20, the method according to aforementioned any embodiment, wherein said downlink control channel is used at least one group component carrier wave.

21, the method according to aforementioned any embodiment, the method also comprises the Physical Control Format Indicator Channel (PCFICH) being received in and transmitting in all component carriers, and does not consider the position of described downlink control channel.

22, the method according to aforementioned any embodiment, the method is also included in component carrier and detects described PCFICH, and described PCFICH is used to indicate and employs how many OFDM symbol for transfer of data.

23, the method according to aforementioned any embodiment, the method also comprises receiving uplink (UL) dispatch map information, wherein the uplink grant being used for uplink component carrier is mapped to downlink component carrier and does not consider the asymmetry of uplink/downlink component carrier.

24, the method according to aforementioned any embodiment, the method also comprises the frequency-hopping mode information received for uplink grant, and described uplink grant is expanded in multiple downlink component carrier.

25, the method according to aforementioned any embodiment, the method also comprises receiving uplink (UL) dispatch map information, and wherein uplink grant is encoded together and is mapped at least one downlink component carrier and do not consider the asymmetry of uplink/downlink component carrier.

26, the method according to aforementioned any embodiment, the method also comprises receiving uplink (UL) dispatch map information, wherein the uplink grant being used for one group of uplink component carrier is mapped to downlink component carrier.

27, the method according to aforementioned any embodiment, wherein said down link control information comprises uplink component carrier index.

28, the method according to aforementioned any embodiment, wherein said uplink grant is the polymerization of the uplink grant corresponding to independent uplink component carrier.

29, the method according to aforementioned any embodiment, the method also comprises receiving uplink (UL) dispatch map information, and each uplink grant wherein for uplink component carrier is mapped to different downlink component carrier.

30, the method according to aforementioned any embodiment, the method also comprises the multiple WTRU ID of use and maps to which uplink carrier to distinguish which uplink grant.

31, a kind of method for the treatment of carrier aggregation performed by wireless transmitter/receiver unit (WTRU), the method comprises at least one component carrier of detection.

32, the method according to embodiment 31, the method also comprises and is locked at least one component carrier described.

33, according to the method in previous embodiment 31-32 described in any embodiment, the method also comprises the type determining at least one component carrier described.

34, according to the method in previous embodiment 31-33 described in any embodiment, when described in the method is also included in, at least one component carrier is non-anchor component carrier, position at least one anchor component carrier, at least one anchor component carrier wherein said carries carrier aggregation information.

35, according to the method in previous embodiment 31-34 described in any embodiment, the method also comprises carrys out receiving downlink transmission based on described carrier aggregation information.

36, according to the method in previous embodiment 31-35 described in any embodiment, in broadcast channel, the type of at least one component carrier described is wherein transmitted.

37, according to the method in previous embodiment 31-36 described in any embodiment, the type of at least one component carrier described in the one wherein in Master Information Block or system information block, is carried.

38, according to the method in previous embodiment 31-37 described in any embodiment, wherein saidly determine also to comprise type carrier aggregation information entity being decoded and knows at least one component carrier described.

39, according to the method in previous embodiment 31-38 described in any embodiment, the method is also included in the uplink component carrier that associates with at least one component carrier described and performs random access procedure.40, according to the method in previous embodiment 31-39 described in any embodiment, the method also comprises acquisition radio resource and controls (RRC) connection.

41, according to the method in previous embodiment 31-40 described in any embodiment, when at least one component carrier is described anchor component carrier described in the method is also included in, connects reception by described RRC and carry out carrier aggregation information.

42, according to the method in previous embodiment 31-41 described in any embodiment, the method is also included in the uplink component carrier that associates with at least one component carrier described and performs random access procedure.

43, according to the method in previous embodiment 31-42 described in any embodiment, the method also comprises acquisition radio resource and controls (RRC) connection.

44, according to the method in previous embodiment 31-43 described in any embodiment, when at least one component carrier is non-anchor component carrier described in the method is also included in, the position of described anchor component carrier is received.

45, according to the method in previous embodiment 31-44 described in any embodiment, the method is also included in the uplink component carrier that associates with at least one component carrier described and performs random access procedure.

46, according to the method in previous embodiment 31-45 described in any embodiment, the method also comprises decodes to predetermined message type, to obtain the information about described anchor component carrier.

47, according to the method in previous embodiment 31-46 described in any embodiment, wherein at least one idle bit indicates the type of at least one component carrier described.

48, according to the method in previous embodiment 31-47 described in any embodiment, wherein remain idle bit and carry carrier aggregation information.

49, according to the method in previous embodiment 31-48 described in any embodiment, the position that idle bit indicates described anchor component carrier is wherein remained.

50, according to the method in previous embodiment 31-49 described in any embodiment, wherein said grappling is implicitly determined by adopting the redundancy check of carrier aggregation particular cycle to decode to broadcast channel.

51, according to the method in previous embodiment 31-50 described in any embodiment, wherein locate the one also comprised in use broadcast channel signaling, RRC signaling or Stochastic accessing process message and described WTRU is directed to described anchor carrier.

52, according to the method in previous embodiment 31-51 described in any embodiment, wherein directional commands is coded in the one in SIB or MIB.

53, according to the method in previous embodiment 31-52 described in any embodiment, wherein carrier aggregation information is carried in the one in SIB, MIB or information element (IE).

54, a kind of wireless transmitter/receiver unit for the treatment of carrier aggregation (WTRU), this WTRU comprises receiver, this receiver is configured to the carrier aggregation information received over the broadcast for identifying at least one component carrier, and the one-component carrier wave at least one component carrier wherein said carries the downlink control channel associated with described WTRU.

55, the WTRU described in embodiment 54, this WTRU also comprises processor, and this processor is configured to detect described downlink control channel according to described carrier aggregation information, and positions the down link control information in described downlink control channel

56, a kind of wireless transmitter/receiver unit for the treatment of carrier aggregation (WTRU) this WTRU comprises receiver.

57, the WTRU described in embodiment 56, this WTRU also comprises processor.

58, according to the WTRU in previous embodiment 56-57 described in any embodiment, this WTRU also comprises: described receiver and described processor are configured to detect at least one component carrier and are locked at least one component carrier described.

59, according to the WTRU in previous embodiment 56-58 described in any embodiment, this WTRU also comprises: described processor is configured to the type determining at least one component carrier described.

60, according to the WTRU in previous embodiment 56-59 described in any embodiment, this WTRU also comprises: described processor is also configured to position at least one anchor component carrier when at least one component carrier described is non-anchor component carrier, and at least one anchor component carrier wherein said carries carrier aggregation information.

Although characteristic sum element of the present invention is described specifically to combine, each feature or element can be used alone when not having further feature and element, or with or the various situations that are not combined with further feature and element under use.Here the method provided or flow chart can be implemented in the computer program, software or the firmware that are performed by all-purpose computer or processor, and wherein said computer program, software or firmware comprise in a computer-readable storage medium in tangible mode.The example of computer-readable storage medium comprises the light medium of read-only memory (ROM), random access memory (RAM), register, buffer storage, semiconductor memory apparatus, the magnetizing mediums of internal hard drive and moveable magnetic disc and so on, magnet-optical medium and CD-ROM disk and digital versatile disc (DVD) and so on.

For example, appropriate processor comprises general processor, application specific processor, conventional processor, digital signal processor (DSP), multi-microprocessor, one or more microprocessor, controller, microcontroller, application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) circuit, the integrated circuit (IC) of any other type and/or state machine associated with DSP nuclear phase.

The processor be combined with software can be used for realizing radio-frequency (RF) transceiver, for using in wireless transmitter receiver unit (WTRU), subscriber equipment (UE), terminal, base station, radio network controller (RNC) or any main frame.This WTRU can use together in conjunction with the module of hardware and/or software simulating, such as camera, camara module, video telephone, speaker-phone, vibratory equipment, loud speaker, microphone, television transceiver, Earphone with microphone, keyboard, bluetooth (FM) radio unit of module, frequency modulation, liquid crystal display (LCD) display unit, Organic Light Emitting Diode (OLED) display unit, digital music player, media player, video game player module, explorer, and/or any WLAN (wireless local area network) (WLAN) or ultra broadband (UWB) module.

Claims (12)

1. the method for the treatment of carrier aggregation performed by wireless transmitter/receiver unit (WTRU), the method comprises:
Receive the carrier aggregation information identifying at least one component carrier, wherein said carrier aggregation information comprises the instruction of the position for downlink data receiving mandate, the wherein said transmission authorized at least one component carrier described is associated, and described position corresponds to the Physical Downlink Control Channel be associated from different component carriers;
The physical downlink control channel of described different component carrier is decoded;
The down link control information that can be applicable at least one component carrier described in the described physical downlink control channel received by described different component carrier is positioned; And
The downlink transmission at least one component carrier described is received in based on the described down link control information received by described different component carrier.
2. method according to claim 1, wherein indicates described carrier aggregation information in broadcast channel.
3. method according to claim 1, wherein said down link control information comprises the multi-carrier indicator field of the index indicated at least one component carrier described.
4. method according to claim 1, wherein indicates described carrier aggregation information by L2/3 signaling.
5. the method for the treatment of carrier aggregation performed by wireless transmitter/receiver unit (WTRU), the method comprises:
Detect at least one component carrier;
Be locked at least one component carrier described;
Determine the type of at least one component carrier described;
When at least one component carrier described is non-anchor component carrier, position at least one anchor component carrier, at least one anchor component carrier wherein said carries carrier aggregation information; And
Receiving downlink transmission is carried out based on described carrier aggregation information.
6. method according to claim 5, wherein transmits the type of at least one component carrier described in broadcast channel.
7. method according to claim 5, carries the type of at least one component carrier described in the one wherein in Master Information Block or system information block.
8. method according to claim 5, wherein saidly determines also to comprise the type decoding and know at least one component carrier described to carrier aggregation information entity.
9. method according to claim 5, the method also comprises:
The uplink component carrier associated with at least one component carrier described performs random access procedure;
Obtain radio resource and control (RRC) connection; And
When at least one component carrier described is described anchor component carrier, connect to come reception carrier aggregation information by described RRC.
10. method according to claim 5, the method also comprises:
The uplink component carrier associated with at least one component carrier described performs random access procedure;
Obtain radio resource and control (RRC) connection; And
When at least one component carrier described is non-anchor component carrier, receive the position of described anchor component carrier.
11. methods according to claim 5, the method also comprises:
The uplink component carrier associated with at least one component carrier described performs random access procedure; And
Predetermined message type is decoded, to obtain the information about described anchor component carrier.
12. methods according to claim 5, wherein at least one idle bit indicates the type of at least one component carrier described.
CN200980141733.4A 2008-10-20 2009-10-20 Carrier aggregation CN102187725B (en)

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US14242909P true 2009-01-05 2009-01-05
US61/142,429 2009-01-05
US15775809P true 2009-03-05 2009-03-05
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